Automatic controller.



G. E. C'AGLIERI &. H. MURRAY.

AUTOMATIC CONTROLLER.

APPLICATION HLEIl 0c}. 16, 19l6.

Patented Aug. 27, 1918.

umwwm Inventions ma @W ar aa QB I citizens of the United States,

UNITED STATES PATENT OFFICE.

GUIDO E. CAGLIERI, OF SAN FRANCISCO, AND HARRY MURRAY, OF ROSS, CALIFORNIA;

SAID MURRAY ASSIGNOR TO SAID CAGLIERI.

AUTOMATIC CONTROLLER.

Specification of Letters Patent.

Patented Aug. 27, 1918.

To all whom it may concern:

Be it known that we, GUIDo E. QAGL ERI, of the city and county of San Franclsco, State of California, and HARRY MU RAY, of Ross, Marin county, State of Cahforma, have invented new and useful Improvements in Automatic Controllers, of which the following is a specification.

This invention relates to an lmproved automatic controller, particularly adapted to be used in conjunction with the speedometer, and the engine of an automobile, and designed to render the engine inoperative as soon as the automobile reaches a predetermined speed, and to cease its efi'ect on the engine as soon as the automobile slows down below the predetermined speed.

Referring to the drawing:

Figure 1 is a front View of a speedometer partly broken away and illustrating the 1nvention.

Fig. 2 is a front view of the invention.

Fig. 3 is a plan view of the invention.

Fig. 4 is a diagrammatic view of the spark plug circuit of an automobile engine, with the controller included therein.

'As illustrated in the drawing the controller may be applied to a speedometer 1 of an automobile. On the speedometer drumdial 2 is placed a series of pins 3. Said pins are placed on the dial with relation to the distance figures thereof so that each pin corresponds to a figure, the pin corresponding to the lowest figure being nearest the upper edge of the drum, and the other pins corresponding to increasing figures being located at increasing distances from the upper edge of the drum. In a 'bracket 4 attached to the speedometer casing is slidably mounted at the front of the drum 2, a slide 5,

through which slide longitudinally extends two insulated wires 6 and 7, the upper projecting ends of which are uncovered. To the slide is secured a rack 8, with which I meshes a pinion 9 secured on shaft 10 journaled on the inside of the front wall of the speedometer, and a thumb wheel 11 is secured to said shaft which projects through a slot 12 in said front wall, by means of -which thumb wheel, the shaft 10 and the pinion. 9 may be rotated to reciprocate the rack and slide to adjust the projecting ends of wires 6 and 7 Lth relation to the pins 3.

ects from the side of.

the slide 5 to a dial 17 on which are figures corresponding to those on the drum disk, and the indicator and plate are so located that when the indicator points to the upper and small number as 10 on the dial, the projecting ends of the wires 6 and 7 rest in the path of movement of the pin 3 corresponding to the small number of miles 10 on the drum dial, and when the slide is reciprocated by the rack and pinion by turning the thumb wheel so that the indicator points to the other numbers on the dial 17, the ends of the wires 6 and 7 rest in the path of movement of the pins corresponding to the same other numbers on the drum dial 2.

As shown in Fig. 4, the spark plug circuit may comprise a magneto 20, vibrator 21, lead 22 connecting the magneto with the vibrator, lead 23 grounding the magneto to the automobile frame 24 and leads 25, 26, 27 and 28 the automobile engine 30. The wire 6 of the controller may be connected to the lead 22 and the wire 7 may be grounded to the frame 24, so that when the automobile reaches the predetermined speed and the corresponding pin 3 engages the end of the wire 6 and forces it into contact with the end of wire 7, the current in the spark plug circuit is short-circuited from the wire 22 through the frame 24 back to the magneto 20, whereupon the spark plugs cease sparking and cause a cessation .of the explosions in the engine cylinders. When the automobile slows down below the predetermined degree the drum 2 turns back and the pin 3 disengages the end of the wire 6, whereupon the ends of the wires 6 and 7 spring apart and break the short circuit, allowing the current to pass through the spark plugs to ignite the gas charges in the engine cylinders to run the engine and automobile. While two wires 6 and 7 may be used, the wire 7 may be dispensed with and the drum 2-grounded to the frame 24, so that the short circuit could be established from the end of wire 6 through the pin 3, and drum 2 to the frame.

While our invention is shown and described in relation to a speedometer, we do what we claim as new and desire to secure by Letters Patent is 1. In combination with a speed responsive device having a movable element, of means for closing an electric circuit including means arranged at an inclination to and across the path of the movable element, and

means adjustable transversely of the path of the movable element for contacting with a predetermined part of the first means, one of said means being carried by the movable element of the speed responsive device.

2. An automatic controller comprising, in combination with a movable speed responsive device and an ignition circuit, of means for rendering the circuit inoperative including stop means arranged at an inclination to the path of movement of the speed responsive device and contact means included in the circuit and adjustable relative to the inclined stop means to vary its point of engagement with said stop means, one of said means included in said first means being carried by said speed responsive device.

3. In combination with a speed responsive device having a movable element, of means for closing an electric circuit including means arranged at an inclination to and across the path of the movable element, and means adjustable transversely of the path of the movable element for contacting with a predetermined part of the first means," one of said'means being carried by the movable element of the speed responsive device, said second means comprising a slidably mounted member and a contact part carried by the latter for being engaged by the first means. i 4. In combination, with a speed responsive device having a movable element, of

means for closing an electric circuit includment, pins at difierent polnts on said element, an 1gn1t1on circuit, a shunt short c1ring means arranged at an inclination to and across the path of the movable element, and means adjustable transversely of the path of the movable element for contacting with a predetermined part of the first means, one of said means being carried by the movable element of the speed responsive device, said second means comprising a slidablv mounted member, a rack secured to the latter, a-

contact part carried by said member for engagement by the first means, and a pinion meshing with the rack to adjust the contact part relative to the first means.

5. In combination with a movable speed responsive device having wiping means arranged at an inclination to the path of movement thereof, means adjustably mounted for movement into the .path of said de vice to vary the point of engagement of said second means on said wiping means, and means controlled by said second means for governing the operation of an engine.

6. In combination, a circuit, a speed responsive device, a plurality of staggered pins on the latter, and means for closing the circuit adjustable for disposal in the path of any pin.

7. In combination with a movable element, fixedly related pins at different points on said element, an ignition circuit, a shunt short circuit to the ignition circuit, a contact within said short circuit, means for adjusting said contact to be engaged by any of said pins upon movement of said movable element to close said short circuit.

8. In combination with a movable element, pins at different points on said element, an ignition circuit, a shunt short circuit to or for the ignition circuit, a slidable member, a contact on said slidable member, a rack onsaid slidable member, a shaft, a pinion on said shaft meshing with said rack, a thumb wheel on said shaft whereby said pinion is rotated to recipro-SB cate said rack and slide to move said contact intothepath of movement of any of said pins, said contact being in said-short cating the pin to which the contact is adjusted to be engaged.

10. In combination with a movable elecuit to or for the ignition circuit, a slidable member, a contact on said slidable member, means for adjusting said slidable member to move said contact into the path of movementof any of said pins,.said contact being insaid short circuit and adapted to close said short circuitwhen engaged by a in.

n testimony whereof we have hereunto set our hands. in the presence of two subscribing witnesses.

GUIDO E. CAGLIERI. HARRY MURRAY.

Witnesses:

J. F..BULOTTI, B. B. Four. I 

